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Recent Posts

  • Fully Metered Boiler Combustion Control vs. Parallel Positioning Systems
  • Using the Stoichiometric Air-Fuel Ratio in Industrial Combustion Applications
  • New Release: White Paper on Improved Industrial Combustion Processes
  • New Release: Check out the Air Monitor Application Optimizer for Process Heaters
  • “Monitor for Change”

Fully Metered Boiler Combustion Control vs. Parallel Positioning Systems

Posted on July 10, 2023

Fully-metered combustion control systems are a solution for efficiency improvements and emissions reduction.

The efficiency of industrial boiler systems can be maximized by tightening the control over the air-to-fuel ratio in the burners. Increased effectiveness in monitoring and controlling airflow in these systems makes tighter control possible. But which combustion control systems offer the best solution for efficiency improvements?

Combustion Control Challenges

The objective of combustion air control is to minimize excess air without creating a fuel-rich environment that ultimately could lead to an explosion. A small level of excess oxygen is desirable to prevent calamity and to ensure complete combustion, so as not to waste fuel. However, a larger excess of air/oxygen also degrades the combustion efficiency because exhaust gas leaving the system at an elevated temperature also represents a loss of energy.

Fully-metered combustion control systems are a solution for efficiency improvements and emissions reduction.

A common margin of excess oxygen is about 2-4% as a target to maximize efficiency and minimize formation of NOx, while still ensuring complete combustion of fuel. However, effectively and accurately monitoring airflow to maintain this small excess margin in industrial combustion systems is more complicated than monitoring the fuel flow.

For better boiler control, maintaining a balanced fuel and air mixture can be accomplished in a couple of different ways.

Parallel Positioning (PP) Systems

In a parallel positioning system, the objective is to link the position of the air damper with the position of the gas valve to maintain an acceptable air-to-fuel ratio that is based on a process setpoint, such as a required steam pressure.

In this type of cross-limiting system, the damper/valve controls are physically linked, so it is not possible to control fuel flow and airflow individually. PP systems may work reasonably well initially but will drift away from the desired fuel-air ratio over time as valve seals and damper linkages wear. 

Additionally, a PP system will not respond to fluctuations in process temperature, duct static pressure, and barometric pressure changes, which alter air density and affect the air-fuel ratio.

Adding O2 Trim to PP Systems

A second option for airflow control is known as parallel positioning with O2 trim. In this control scheme, O2 trim systems are used to continuously monitor the amount of oxygen in the exhaust gas and provide feedback to an automatic positioner for the air damper. 

The objective is to “trim” the airflow to drive excess oxygen lower (closer to 2-4% excess O2). PP with O2 trim is the most common type of control that is applied to combustion systems across many industries.

Fully Metered Combustion Air Control Systems

In this scheme, flow measurement devices are added for both fuel and air flow measurement to provide instant feedback for maintaining the air-to-fuel ratio at its most efficient point. In a fully metered system, accurate mass-based airflow measurement is crucial.

The rationale behind fully metered systems is to address multiple issues simultaneously: promote efficient fuel use, control emissions, extend burner lifetime (especially with ultralow-NOx burners), and expand the efficient operating range. Fully metered systems typically include O2 trim, as well. This provides the ultimate in control and final operation.

Advanced Control Technology for Increased Efficiency

The fully metered combustion control system is only as good as the measurement technologies used as inputs. These can include flow conditioners followed by multipoint Pitot averaging arrays that are used to accurately sense the stratified velocity profile.

Next, a low-range multivariable transmitter is used to amplify the differential pressure and compensate for changes in atmospheric pressure, static pressure, and process temperature. This provides a 4–20mA output with a linear relationship to mass flow to the fully metered control system.

In cases where particulates are present, an automatic purge system also is integrated into the flow measurement system, ensuring that the measurement is never lost due to the sensing ports plugging. During this purge cycle, the signals are held at their last values.

Benefits of Fully Metered Combustion Control Systems

The degree of actual control enabled with a PP/O2 trim system is not very large. In contrast, state-of-the-art fully metered systems have the best ability to optimize the efficiency of burners and can address multiple challenges at once, including efficiency, maintenance, safety, and emissions.

Fully metered systems allow tighter control of the air-fuel ratio throughout the full operating range of the boiler and ensure that emissions are within specifications. They also allow a much higher degree of control for operations over tuning the system, so operators can closely match the optimal air-fuel ratio even throughout process temperature swings, barometric pressure, and static pressure changes.

The greater degree of combustion air control means there are fewer boiler trips, so less downtime across full operating ranges of the combustion burner when the air-fuel ratio gets out of balance. Fully metered systems also can easily adapt to fuel type or composition changes such as switching between natural gas and fuel oil or changing natural gas suppliers.
The challenge of realizing fuel savings while maintaining the ideal air-to-fuel ratio for process controls is felt by plant managers everywhere. Discover more information about Air Monitor’s combustion air flow measurement technologies and how they can benefit your industrial boiler application by clicking below.

Combustion Airflow Measurement

Using the Stoichiometric Air-Fuel Ratio in Industrial Combustion Applications

Posted on June 20, 2023

efficient air to fuel ratio is critical in industrial combustion applications

As the economy tightens, operators of industrial combustion systems such as steam boilers, thermal oxidizers, fired heaters, waste-heat boilers, dryers, furnaces, incinerators, and kilns are called upon to save fuel costs and minimize downtime. Each of these applications burns fuel in the presence of air (oxygen) to create process heat.

Saving fuel costs and minimizing downtime requires maximizing the combustion efficiency by tightly controlling the flow of both air and fuel introduced to the burner. The trick is knowing how much of each to provide—and that goes back to understanding the stoichiometric air-fuel ratio.

efficient air to fuel ratio is critical in industrial combustion applications

Efficient Air-to-Fuel Ratio

In chemistry, stoichiometry is the method for balancing chemical equations to calculate the exact amount of individual reactants needed to ensure that all the reactants are used up with no excess left over from the reaction. For example, a simple combustion equation for burning the methane (CH4) in natural gas is:

CH4 + 2O2 → CO2 + 2H2O + Heat

According to this stoichiometric equation, a perfectly balanced combustion process would require exactly two oxygen (O2) molecules to burn each methane molecule. The reaction would produce one molecule of carbon dioxide (CO2) and two molecules of water (H2O) along with excess heat to be used for the process.
If the equation is not perfectly balanced, for example, if there is not enough O2  to completely combust or burn each CH4 molecule, the reaction will produce some carbon monoxide (CO) instead of CO2.

A chart of how a stoichiometry curve works.

Real-World vs. Ideal Air-to-Fuel Ratio

In theory, a perfectly efficient combustion system would operate with a perfect stoichiometric ratio of fuel to oxygen. But in practice, real-world industrial combustion systems need to operate with a slight excess of oxygen in the ratio of air to fuel. 

This ensures complete combustion and avoids potential safety issues associated with burning fuel-rich mixtures, which can lead to safety issues.

The result, as you can see from the illustration, is that operators try to maintain a slightly lean mixture of fuel with only a small amount of excess oxygen because too much excess oxygen degrades the combustion efficiency and increases cost. This happens for a few reasons.

First, by requiring the system to heat a larger volume of gas than is needed decreases the ability for the system to transfer heat from the flame to the steam (in the case of a boiler) or to the process fluid.

Second, too much excess oxygen will force the fan to operate at elevated speeds, which wastes energy over time and increases emissions. A common margin of excess air is about 2-4% more air than fuel. 

This target maximizes efficiency and minimizes formation of NOx—a pollutant generated from nitrogen in the air reacting with oxygen—while still ensuring the complete combustion of fuel.

3 Methods for Maintaining an Efficient Air-to-Fuel Ratio

To accurately maintain this small excess margin in industrial combustion systems, combustion control systems need accurate airflow measurement and control in addition to fuel flow monitoring. In general, operators use one of three different methods to monitor and maintain the proper amount of air and fuel in an industrial plant:

  • Parallel positioning (PP)
  • PP with O2 trim
  • Fully metered airflow control systems

Parallel positioning systems are relatively straightforward technically and are generally the least expensive option for controlling airflow. These provide some degree of control for stable loads and consistent burner function and offer the lowest capital cost of the three options. 

However, PP is not effective for variable loads or rapid swings and is the least able to maintain optimal efficiency.

PP with O2 trim systems continuously monitor the amount of oxygen in the exhaust gas and provide feedback to an automatic positioner for the air damper. The objective is to “trim” the airflow in order to drive excess oxygen lower (closer to 2-4% excess O2).

PP with O2 trim is the most common type of control that is applied to combustion systems across a number of industries. This type of system, however, is best applied to boilers at steady-state operation, while real-world boilers run at constantly varying steam loads. The degree of actual control enabled with a PP/O2 trim system is not very large and this system is not the best choice for boilers with broad load ranges.

Fully metered airflow control systems

Minimizing the amount of excess air without creating a fuel-rich environment can best be achieved with the help of fully metered systems that effectively monitor and control airflow. These systems have the best ability to optimize the efficiency of burners and can address multiple challenges at once including efficiency, maintenance, safety, and emissions. 

They allow tighter control of air-to-fuel ratio throughout the full operating range of the boiler and ensure that emissions are within specifications.

Fully metered systems allow a much higher degree of control for operations over tuning the system using PP with O2 trim. With a fully metered system, operators can closely match the optimal air-fuel ratio even throughout process temperature swings, barometric pressure, and static pressure changes. 

The greater degree of control means there are fewer boiler trips and therefore less downtime across full operating ranges of the combustion burner when the air-to-fuel ratio gets out of balance. Fully metered systems also can easily adapt to fuel type or composition changes such as switching between natural gas and fuel oil or changing natural gas suppliers.

Because a poor ratio of air to fuel can contribute to failures of burner internals as well as soot buildup, there is a connection to unplanned shutdowns. Better airflow control enabled by fully metered systems results in fewer chronic maintenance issues, such as burner replacements.

For large-sized boilers, good air monitoring allows the possibility of using a predictive emissions control system (PEMS) versus continuous (CEMS) to report emissions to air districts or the EPA. 

A PEMS system is one-third the cost of a CEMS but requires that plant operators can maintain high levels of confidence in the control system for airflow to ensure the measurement is accurate.

A Fully Metered Airflow Control System Can Benefit Your Industrial Application

The benefits of a fully metered airflow control system come with costs and added complexity— however, the benefits far outweigh the costs. The cost of this type of system varies but is slightly more than that of a PP with O2 trim.
The challenge of maximizing fuel economy using the stoichiometric air-to-fuel ratio is felt by plant managers everywhere. With a fully metered combustion airflow measurement system, operators can expect to see measurable efficiency improvements and emissions reductions that will increase their bottom line.

Combustion Airflow Measurement

New Release: White Paper on Improved Industrial Combustion Processes

Posted on March 2, 2023

Optimizing industrial process heaters

Air Monitor has released a new White Paper on combustion airflow measurement solutions to help reduce costs with a fully metered system.

Ready to unlock cost savings? Get a copy of this new white paper on improving efficiency in combustion processes.

Getting Efficient Also Saves Money

This paper discusses one of the primary ingredients to gaining efficiency: combustion airflow. Finding the right air-to-fuel ratio to achieve the lowest emissions with higher efficiency is the ultimate goal. For industrial applications, this may include any of the following equipment types:

  • Boilers
  • Regenerative thermal oxidizers (RTOs)
  • Fired heaters / process heaters
  • Solids dryers
  • Furnaces
  • Incinerators
  • Kilns, and many more

There are challenges associated with combustion systems and particular needs for equipment types. Burner performance and maintenance is one example. Emissions regulations also impact combustion systems in industrial settings.

There are three control options discussed in this paper along with the pros and cons of each method. The three methods discussed are:

  • Parallel positioning systems
  • Parallel positioning systems with O2 trim
  • Fully metered control systems

The paper goes on to discuss the advantages and limitations of these three control schemes and potential emissions regulations that impact the industry.

Download the Combustion White Paper from Air Monitor

To learn more about how combustion processes can be made more efficient, download the White Paper “Unlocking Cost Savings: Improved Airflow Control in Industrial Combustion with a Fully Metered System” from the link below.

Get the White Paper >>

Air Monitor Solutions

Air Monitor airflow measurement stations provide higher accuracy over shorter lengths of straight duct than competing products. This is achieved by using multi-point averaging pitot tube technology coupled with ultra-low, highly accurate, differential pressure measurement. Another benefit of Air Monitor equipment is the ease with which it can be applied to existing systems. This is feasible with minimal disruption and downtime.

New Release: Check out the Air Monitor Application Optimizer for Process Heaters

Posted on February 21, 2023

Optimizing industrial process heaters

Air Monitor has released the new Application Optimizer for Process Heaters.

Optimizing industrial process heaters
How well have you optimized your process? Process heating optimization is within reach with three key combustion airflow measurement points.

The Importance of Process Heaters in Industrial Processes

Process heaters are used for a variety of purposes across many different industries. Power plants, manufacturing facilities, automotive plants, and the oil and gas industry are some examples where process heating is required for the preparation or treatment of materials as part of a larger process to create or manufacture something.  

How Process Heaters Work

Natural gas, fuel gas, and/or oil are supplied to burners at the base of the gas-fired process heater. To achieve combustion, air is fed to the burners through a natural, induced, forced, or balanced draft. Combustion occurs in the radiant section where coils or tubes traverse from the convection section of the heater. The process fluid enters the tubes or coils through the process feed inlet, is heated to a desired temperature, and exits the heater through the process feed outlet.

Optimizing your Process Heater – 3 Key Measurements

Monitoring combustion airflow and fuel gas flow to the Process Heater is essential to gaining insight on how to optimize the process. This new Application Optimizer identifies key flow measurement points on Process Heaters that will help users tune to the optimal air/fuel ratio to achieve efficient combustion. A more efficient heater will result in cost-savings and the opportunity to minimize emissions.

Download the Application Optimizer for Process Heaters

Get your copy of the new Application Optimizer for Process Heaters from Air Monitor to learn more about how to optimize your process heater today!

Get the Application Optimizer for Process Heaters >>

Air Monitor Solutions

Air Monitor airflow measurement stations provide higher accuracy over shorter lengths of straight duct than competing products. This is achieved by using multi-point averaging pitot tube technology coupled with ultra-low, highly accurate, differential pressure measurement. Another benefit of Air Monitor equipment is the ease with which it can be applied to existing systems. This is feasible with minimal disruption and downtime.

“Monitor for Change”

Posted on April 22, 2022

Earth Day 2022 / Air Monitor – ESG Statement Release

In honor of Earth Day, Air Monitor releases its Environmental Social Governance (ESG) Statement.

Socially responsible strategies are taking shape across commerce and investment firms by pledging ESG goals or initiatives. Examples of ESG targets are net-zero carbon emissions, reducing waste, alternative packaging, reduced fuel consumption, positive social change in communities, and fostering diversity in the workplace.

For our part, Air Monitor has summarized its commitment in an ESG Statement. Air Monitor believes in being a steward of nature through responsible manufacturing, material recycling, and producing eco-conscious products.

Air Monitor believes in “Monitor for Change”; as a leader in airflow measurement technology, we aim to institute ESG principles that will help maximize our impact on positive change in the world.

Visit our ESG Statement page for more information about how Air Monitor is doing their part.

We’re in a Tight Spot! The Importance of Straight, Unobstructed Pipe Runs in Air Flow Measurement

Posted on October 7, 2021

Turbulent Flow

The biggest challenge in air flow monitoring applications are obstructions causing turbulent or irregular airflow profiles in the desired straight run section. Most air flow measuring devices are adversely affected by an underdeveloped flow profile. Ideally, more straight run is added in to the length of duct or pipe where an air flow measurement device is needed to achieve the best accuracy.

Airflow Dynamics

Let’s look at the foundation of airflow dynamics in air flow measurement to understand how straight run lengths affect the flow/velocity profiles in air ducts or industrial pipes.

  • Airflow is extremely dynamic​
  • Velocity profiles can shift based on proximity to upstream/ downstream disturbance and/or the airflow velocity​
  • Accurate measurement requires multiple sensing points across measurement plane​
  • The more points of measurement, the better the measurement accuracy

The type of obstruction or elbow in the duct/pipe, the velocity, and other factors will have differing effects on the velocity profile at different distances.

90 Degree Elbow

The images below show how a duct’s airflow velocity profile is affected by a 90 degree elbow without vanes. The closer the airflow measurement is to an elbow, the more turbulent it becomes. As shown, increasing the distance from 0.5 to 2.5 diameters produces a much more uniform airflow condition.

Sweep Elbow

Of equal importance are the directional vectors of the airflow in a duct. The images below show how additional straight run downstream of a sweep elbow will develop the flow profile, so that angle of flow within a duct is improved. Many airflow technologies are susceptible to large errors with only minor angular flow components (<10 degrees).

Getting the Right Fit in a Tight Spot

Depending on the technology, the straight run requirements may be excessively long considering the installation location. What do you do when you can’t add duct or pipe lengths to accommodate air flow measuring technologies with excessively long straight run requirements? You find a technology that can accommodate the shorter straight runs by calling the Air Monitor experts.

The ACCU-flo in Action

Air Monitor manufactures airflow measuring stations, like the ACCU-flo, that have built-in flow straightening and profile conditioning technology.

This flow straightening technology is paired with a profile conditioner and air flow measuring probes that are engineered to function accurately in the specific airflow conditions in the duct.

Here are two examples of the ACCU-flo installed and accurately measuring airflow and temperature for regenerative thermal oxidizers (RTOs) with limited straight runs available:

The client – and the measurement point – were in a tight spot. Luckily, the ACCU-flo was able to straighten the flow of air in the pipe and offer a truly accurate measurement. The resulting measurements allowed the client to fine tune the airflow to improve the efficiency of the RTO for big savings.

For more information on how Air Monitor products can help in your application, contact one of our experts today!

Optimization 101: Natural Gas Fired Boiler Efficiencies

Posted on July 14, 2021

Industrial Boiler Application Optimizer

The Importance of Boilers in Industrial Processes

Industrial Boiler Application Optimizer

Boilers can be found in most industrial facilities and are used to produce steam or heat water for space and process heating. Some boilers are used for the generation of power and electricity. Some natural gas fired industrial boilers have a relatively clean airflow combustion process, but particulate-laden airflow is common and creates challenges for most flow measurement devices on the market.

How it Works

Natural gas and an airflow stream are burned to heat the inner chamber or tubes within the body of the boiler. The heat causes the temperature of the water to rise until it boils and produces steam. The combustion air and fuel feeding the burner must be tuned to the optimal air/fuel ration to improve efficiencies, minimize excess air while ensuring complete combustion, and minimize emissions. If a Flue Gas Recirculation (FGR) stream is used as a NOx reduction technique, the FGR flow should be monitored to ensure the optimal ratio of FGR to combustion airflow. The exhaust gas is then vented to atmosphere and usually must be monitored for emissions compliance.

Types of Boilers

Some common natural gas fired boilers include:

  • Large industrial boilers
  • Package boilers

Example of Annual Savings

In 2012, the US Department of Energy released a tip sheet on how to improve your boiler function and efficiency. They were able to show concrete savings for operators that successfully improve efficiencies. In their example, they calculated upwards of $200,000!

  • Annual Savings:
    • = Fuel Consumption x (1–E1/E2) x Fuel Cost
    • = 29,482 MMBtu/yr x $8.00/MMBtu
    • = $235,856

Optimization 101: Natural Gas Fired Boiler Efficiencies

Get efficient by learning these 3 combustion air flow measurement points to optimize natural gas fired boilers uncovered in the new Application Optimizer document by Air Monitor. Download your copy of the Air Monitor Application Optimizer for natural gas fired boilers to learn how to optimize your process now.

Download Application Optimizer

Under Pressure: Exploring the Top 3 Industrial Benefits for Facility Pressure Control

Posted on June 29, 2021

Space Pressure Image

Of all the things hitting your desk, why should you worry about space pressure control in your facility? We’ve done the research for you and have identified three major benefits.

Space Pressure Image

Top 3 Industrial Benefits of Facility and Space Pressure Control

#1 Quality production output/improved process control:

Where purity standards must be maintained for product quality, production output, and where improved process control is required, facility and space pressure control become important. Space pressure control can help avoid contamination of clean areas by dust, pollutants, or other undesired conditions that might impact the quality of your product.

Here’s a list of examples:

  • Manufacturing pharmaceuticals, electronics, food & beverage
  • Facilities with “clean rooms”
  • Furnace pressure control for battery recyclers (EPA regulation tied to this (40 CFR Part 63 National Emissions Standards for Hazardous Air Pollutants (NESHAP) from Secondary Lead Smelting)) for optimal process control and quality production output

#2 Cost Savings:

Without pressure control, there can be some unintended negative consequences to day-to-day functions that end up increasing facility maintenance costs. Correcting these issues help minimize system cycling and excess power use for energy savings. Let’s look at a couple examples.

First, pressure sensing devices must be used to detect pressure imbalances. Without accurate pressure sensing devices in key areas, the control system cannot function efficiently. When a pressure imbalance occurs causing exfiltration or infiltration, the control system will continue to cycle attempting to restore an unattainable balance and energy costs will soar.

Next, have you ever had trouble opening a door because of pressure imbalances? This isn’t just an inconvenience for workers trying to easily navigate the facility, sometimes with product, inventory, or other gear. It can also be a huge energy sink! Sometimes doors will not fully shut from pressure imbalances, too. This causes an air stream to form that allows heated/cooled facility air to escape the space resulting in higher energy costs. A good pressure system with accurate pressure sensors can correct these issues.

Lastly, pressure control can have some long-term benefits – like detecting leaks. The analysis of long-term aggregate pressure level data can pinpoint troublesome areas. Further inspection of the problem areas will uncover any leaks in the airflow system. Repaired leaks will create a more efficient system and save energy costs over time.

#3 Worker safety in industrial facilities:

Maintaining duct pressure levels relative to room or area pressure levels is key to worker safety. This is done by measuring pressure in duct, measuring in the space, then comparing the duct pressure to ambient air pressure. The control system adjusts – based on this data – to balance pressure accordingly. Let’s look at two examples:

  • Avoid the introduction of contaminants into work areas that jeopardize worker health and safety 
  • Space pressure control around smelting areas to protect workers in a smelting facility or foundry

Get up to date on the regulations that might be impacting your facility safety requirements.

How Does it Work?

To get a better picture, let’s look at how a theoretical example of a facility pressure control system would work.

First, the control system may measure the outdoor pressure, which changes periodically due to changes in weather. Then, the control system may monitor the pressure of spaces inside the facility. Some systems incorporate airflow measurement into this control scheme. Pressure data feeds into the control system and triggers the airflow system to open and close dampeners allowing airflow to key areas in the facility. While the air flows through the system, duct static pressure sensors feed data to the control system. Duct pressure data and ambient pressure data are compared with the pressure settings that the operator has determined are ideal atmospheric environments for the work or processes occurring in that space of the facility. In some cases, the control system may be set up to maintain a positive/negative pressure relationship between two areas to avoid contamination of production output.

Why it’s Important

Manufacturing facilities must be able to meet purity standards when producing medicines, food, beverages, electronics, or other dust- and contaminant-sensitive products. Clean rooms create a safe environment, free of contaminants, where these products can be manufactured to the high-quality standards set by the FDA or other regulatory bodies.

Industrial facilities that operate with or produce harmful pollutants like volatile organic compounds (VOCs) or hazardous air pollutants (HAPs) must be able to maintain safe working environments for their employees and ensure that these pollutants are being destroyed per regulations in air waste processing equipment like thermal oxidizers and not venting into work areas or the atmosphere.

  • Long term pressure monitoring of the waste airflow ducts compared to the ambient pressure can help detect leaks in the waste airflow feeds.
  • Keep harmful gases out of smelting and combustion processes

Although OSHA does not have specific requirements for workplace indoor air quality (IAQ), they do require employers to provide their workers with a safe workplace that does not have any known hazards that cause or are likely to cause death or serious injury. Some states, like California and New Jersey, have their own indoor air regulations.

What Can you Do to Manage Industrial Facility Pressure Challenges?

Ok. So, now that we all understand the benefits of having a pressure system and how it works, let’s discuss the challenges that commonly arise when trying to set up a pressure system and the solutions that Air Monitor offers.

Challenge 1: Design challenges

Air Monitor Solution: Full start-up services, duct traverse studies & training

Air Monitor has over 50 years’ experience providing premier airflow measurement and pressure measurement systems to industrial process markets. Our technical team ensures that your system will meet the standards that your challenging application requires.

Challenge 2: Accuracy

Air Monitor Solution: Excellent stability, repeatability, and accuracy

Air Monitor products work together with the best-in-class accuracy of our transmitters to keep your control system running smoothly.

Challenge 3: Tough industrial settings

Air Monitor Solution: Range of Offerings and Materials for Tough Environments

Air Monitor’s rugged product line can operate in corrosive, high temperature, and particulate-laden air streams.

Look at our line of products tailored to meet your facility space pressure control needs:

  • S.A.P. (Static Pressure Ports)
    • These sensors detect the pressure of an indoor space
  • S.O.A.P. (Static Outdoor Air Ports)
    • These sensors detect the pressure outdoors of a facility
  • STAT-probe
    • These sensors detect the pressure inside of a duct
  • VELTRON II Transmitter,
    • used in conjunction with our pressure sensors and airflow measurement stations can measure and help regulate space/room/area pressure
  • VEL-trol II Transmitter
    • Same great features as the VELTRON II, also includes Proportional Integral Derivative (PID) control

Feeling under pressure? Talk to an expert at Air Monitor about what you’re experiencing at your facility: Contact Us

4 Key Ways to Optimize your Thermal Oxidizer

Posted on April 26, 2021

Get Cost Savings with an Optimized Thermal Oxidizer in your Facility

Application Optimizer - thermal oxidizer - rto

The Importance of Thermal Oxidizers in Industrial Processes

Thermal Oxidizers can be found in a variety of industrial facilities and are used to process industrial waste streams before venting to the atmosphere. Specifically, they are used to remove volatile organic compounds (VOC’s) and other hazardous air pollutants (HAP’s) from process exhaust flows as required by the EPA/Clean Air Act.

How it Works

The waste gas containing the pollutants is fed into the thermal oxidizer. The combustion chamber within the thermal oxidizer must reach the targeted operating temperature to destroy the pollutants in the chamber. A burner is used to achieve the targeted temperature, so the combustion air and fuel feeding the burner must be tuned to the optimal air-fuel ratio to run efficiently. If the targeted operating temperature is maintained, the pollutants are destroyed through thermal combustion and are chemically oxidized to form exhaust gas comprised of CO2 and H2O. The exhaust gas is then vented to atmosphere.

Types of Thermal Oxidizers

Thermal oxidizer technologies include:

  • Direct fired thermal oxidizer – afterburner
  • Regenerative thermal oxidizer (RTO)
  • Direct fired with heat recovery (recuperative thermal oxidizer)
  • Flameless thermal oxidizer
  • Catalytic oxidizers (regenerative or recuperative

4 Key Ways to Optimize

Air Monitor has identified 4 key measurement points to optimize thermal oxidizers in the new Application Optimizer document. Download your copy of the Air Monitor Application Optimizer for Thermal Oxidizers to learn how to optimize your process now.

Download Application Optimizer

Air Monitor Welcomes Patrick Cool as New Director of Operations for the TASI Gas Flow Division

Posted on April 15, 2021

Patrick Cool - New Director of Operations

Air Monitor is pleased to announce that Patrick Cool is the new Director of Operations for the TASI Gas Flow division.

Patrick Cool - New Director of Operations

Patrick is the senior manager within the division responsible for Operations (manufacturing, logistics, purchasing, planning, inventory/warehouse management, facilities, manufacturing engineering, project management, environment/health & safety, and facility maintenance) for Air Monitor and the other American-based business units within the TASI Gas Flow division.  His primary focus will be on ensuring factory operational excellence and customer satisfaction for the TASI Gas Flow businesses.

Patrick first started working in manufacturing in 2012 and has held positions of management in Quality, Software Development, Information Technology and Operations since that time.  He is a graduate from the University of California – Davis with a Bachelor of Science degree in Managerial Economics.

Please join us in welcoming Patrick to the team and wishing him well in his new role.

Air Monitor is always looking for the best of the best. If you or someone you know is looking for a job in the flow industry, check out our current job openings.

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